Х-3,2=2 7/15 8,4: x=2 1/3 0_6x=9/20 : d - вопрос №78123713227158421306920 от lakras 06.07.2021 20:52

Question

Математика: Х-3,2=2 7/15 8,4: x=2 1/3 0_6x=9/20 : d

lakras · Answer

A) x - 3,2 = 2 7/15x = 2 7/15 + 3,2x = 2 7/15 + 3 1/5x = 2 7/15 + 3 3/15x = 5 10/15 = 5 2/3б) 8,4 : x = 2 1/3x = 8 2/5 : 2 1/3x = 42/5 * 3/7x = 6/5 * 3/1x = 3 3/5 = 3,6в) 0 - 6x = 9/206x = 9/20 + 06x = 9/20x = 9/20 : 6x = 9/20 * 1/6x = 3/20 * 1/2x = 3/40...